diff --git a/lib/client/dom.js b/lib/client/dom.js
index 341edc98..49bb9531 100644
--- a/lib/client/dom.js
+++ b/lib/client/dom.js
@@ -237,6 +237,19 @@ var CloudCmd, Util, DOM, CloudFunc;
                 return lRet_b;
             };
             
+            this.toggleClass             = function(pElement, pClass) {
+                var lRet_b = true,
+                    lClassList = pElement.classList;
+                
+                if (pElement && lClassList)
+                   lClassList.toggle(pClass);
+                
+                else
+                    lRet_b = false;
+                
+                return lRet_b;
+            };
+            
             /**
              * check class of element
              *